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Application filed by Bedrich Bicanek, Ludek Voznica, Sava KubinfiledCriticalBedrich Bicanek
Priority to CS872852ApriorityCriticalpatent/CS262946B1/en
Publication of CS285287A1publicationCriticalpatent/CS285287A1/en
Publication of CS262946B1publicationCriticalpatent/CS262946B1/en